Drip stopper



Dec. 8, 1931. A. E. DAVENPORT DRIP STOPPER Filed June 21, 1928 INVENTOR.

A TTORNE Y.

Patented Dec. 8, 1931 .E'EE STATES ARTHUR E. DAVENPORT,

OF MAYWOOD, ILLINOIS DRIP STOPPER Application filed June 21,

The invention relates to pumps for dispensing lubricating oils and thelike and more particularly to means for use in connee-tion therewith toprevent dripping and so obviate conditions making for loss of prime r ashereinafter referred to.

and inaccurate measure. More specifically it is the aim of the inventionto provide a simple attachment capable of application to all standardpumps and which operates in a positive manner to seal the out-let ornozzle against dripping.

The nature, characteristic features and scope of the invention will morereadily be understood from the following description taken in connectionwith the accompanying drawings, forming a part hereof, wherein Figure 1is an elevational view of the drip stopper in operative position.

Fig. 2 is a similar view in inoperative position.

Fig. 3 is a detail, showing the valve.

Fig. 4c is a sectional plan view of the clamp.

Fig. 5 is a vertical sectional view through V the connected parts.

According to the invention, the outlet or delivery pipe 5 of a pump isequipped with a readily applicable delivery unit or nozzle 5 for thesupport and carriage of the drip stopper. It is understood that thenozzle 5, which is or may be of conventional or preferred form, isremovably secured by means of screw threads to the delivery pipe 5, andis provided with a restricted delivery passage 16, The supporting meanspreferably consists of a sectional clamp embodying a pair of half rings6 with aligning ears 7 apertured for the passage of securing devices forlocking the clamp in place on the skirt portion 8 of the nozzle, theupper edges of the half rings being contoured, as by inwardly directedlips 9, to center the clamp and to put the weight of the latter and ofthe drip stopper on the nozzle. One of the half rings is formed orprovided with a pair of spaced depending ears 10 having registeredopenings. A lever 11 has a short arm 12 at right angles to the longerarm A which enters between the ears 10 and is pivotally secured as at13. The arm 12 is formed 1928. Serial No. 287,127.

or provided with an offset or projection 14 terminating in a valve orstopper element 15 adapted to impinge upon and close the outlet of theoil delivery passage 16; and as a further assurance of effective sealingof the oil outlet the valve or stopper element is provided with a fabricor other appropriate sealing wafer 17. It will be understood that thedrip stopper is effective in the down or horizontal position of thelonger arm of the lever 11, the stopper being restrained against casualdisplacement by a weight or ball 18 carried by the lever. When oil is tobe dis pensed the longer arm of the lever is moved to substantiallyperpendicular position, it being understood that by reason of the offsetarm 12, and the presence of an inclined slot 19 in the proximate clampmember, the lever is tilted sufficiently beyond the center of gravity tobe restrained in its uplifted position by the weight of the ball.

Having described my invention, I claim:

1. A drip stopper for oil pumps, comprising the combination with thedelivery unit, of a device pivoted adjacent the outlet thereof, saiddevice having means on one side of the pivot adapted to bear upon andseal the outlet, and means on the other side of the pivot eifective in apositive way to secure the sealing element in operative position or ininoperative position.

2. The combination with the outlet of an oil delivery unit, of apivotally mounted external sealing element for the outlet, and aweighted lever having a circumscribed arc of movement to hold thesealing element in effective position or in inoperative position.

3. In combination with an oil delivery pipe, a delivery unit including askirt element interfitting concentrically with the delivery pipe, astopper pivotally supported by the skirt element and capable of anoperative relation with the unit to cut off flow therefrom or aninoperative relation with such unit, and a lever for holding the stopperin either relation against casual displacement.

4. In combination with an oil delivery pipe, a delivery unit supportedby said pipe and including a concentric skirt element, a clamp carriedby the skirt element, means for removably securing such clamp to theskirt, a pivoted stopper adapted to said unit and serving in oneposition to cut ofi flow therefrom, and a Weighted lever for operatingsuch stopper.

In testimony whereof I afiix my signature.

ARTHUR E. DAVENPORT.

